As we are all fellow users here we cannot help directly with this challenge you are facing. However, were the images all the same size, as it may relate as to the size and how quickly they upload that’s causing this.

Hello! You’re on a forum with the Imgur community team and fellow Imgurians who are here to help. While I love to read a good snarky comment now and then, it’d be great if we could also collect some details about what you’re experiencing Info like browser, OS, image types, and steps to reproduce the issue can help us create a detailed bug report to share with the engineering team, or reopen a closed report. If you’d prefer to share in private, that can be done at support@imgur.com.